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Cyber-security update

by Simon Gee
22nd October 2026

UK Sires are confident that this website is safe to use.

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AHDB calls farmers to shout about the sire

21st January 2019

With only 23 per cent of sires currently registered on passports, AHDB Beef & Lamb is urging farmers to start recording to improve profitability and boost competitiveness.

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Dairy Genomic indexes stand the test of time

by Marco Winters
9th January 2019

A major new study of Holstein dairy sires has confirmed that genomic indexes are a remarkably reliable predictor of actual daughter performance. This provides reassurance to the thousands of UK dairy producers who select service sires on the strength of an index based on their DNA.

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Six tips for terrific AI tank management

12th December 2018

Liquid nitrogen storage tanks are so good at insulating the materials stored inside that if you put a thermos of steaming hot coffee in your tank, you'd still burn your tongue on a cup poured from that thermos 10 years later.

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The Importance of Genetics for Beef enterprises

by Simon Gee
26th October 2018

Genetics and selection decisions are a major driver of the beef enterprise. There are two key criteria: the genetic value of the bull (or heifer, breeder) for economically important traits; and the ability of that animal to be able to reproductively ‘deliver the genetics’ for the length of time it is used in a herd.

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Giving your herd the best chance for successful fertility

by Davis Wilde
26th October 2018

Achieving high levels of reproductive performance will be a major key performance indicator (KPI) on most dairy farms this winter. This article considers some nutritional factors which could have an impact on success.

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CRI and Koepon combine to form URUS

by Simon Gee
5th October 2018

Two well-established international organisations – one cooperative and one privately-owned company – have combined to form a new global leader in cattle artificial insemination genetics and farm management information.

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Four Misconceptions of Pre-Fresh Heifers

by Simon Gee
10th August 2018

The ideal pre-fresh period is 21 days. Too much maize silage makes heifers fat. Excess dietary salt causes udder oedema. The younger the age at first calving, the better.

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